High frequency saw filters stretched over non-overlapped electrodes for satellite broadcast receivers

J. Yamada, A. Yuhara, T. Shiba, T. Toyama

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

We have developed a new UHF SAW filter for satellite broadcast receivers. The features are a high center frequency which suppresses image inter-ference, sufficiently flat group delay for linear FM detection, and no necessity to adjust for tuning. The influence of electrode resistance on insertion loss, and the triple transit echo caused by surface wave reflection have been analyzed in Smith's extended equivalent circuit model, and in our research is effectively applied as an independent design parameter of radiation and load conductance. In consequence interdigital transducers with wide apertures stretched over the nonoverlapped electrodes have been applied to suppress undesired surface wave diffraction and reflection effects without any increase of insertion loss, and they therefore eliminate the convenventional tuning coils.

Original languageEnglish
Pages (from-to)673-679
Number of pages7
JournalIEEE Transactions on Consumer Electronics
VolumeCE-31
Issue number4
DOIs
Publication statusPublished - 1985 Jun 28
Externally publishedYes

ASJC Scopus subject areas

  • Media Technology
  • Electrical and Electronic Engineering

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